Hi folks anyone any experience with Samwha capacitors? I am looking at these to replace some large ageing electrolytics in an old amplifier (75W) and wonder if I can expect a reasonably long life and decent performance out of them?
Need to know the voltage rating of the cap in the circuit. Samwah doesn't have a great reputation (don't know if it is well deserved or not). Generally speaking you will get longer life from the higher temperature rating/ripple current and lower ESR.
2 x capacitors @ 63V rating for a +/- 50v supply. Not sure what make they are off hand but most electros in this unit were Roederstein which I think were about as good as you got in 1981! ESR quite good in some of them but one or two were a little high ohms.
I think I might leave them then as there is no sign of leakage and the ripple at maximum volume under load is less than a volt. I just wanted to guarantee some longevity before I sold the unit on but I am not prepared to pay £20+++ for a single capacitor!
Not sure that a bad rep for Samwha would be justified but that is what I would like to know for sure!
Olly.
Thanks Ronv. I guess it could have been any number of reasons, like you say too much heat build up or a bad batch, maybe a combination of factors. If they had been stored on a shelf for 3 years as that article suggests that would have not been ideal I guess!!!
I suspect they are ok though. I would really like to hear from anyone else or maybe if anyone has any reasonably priced alternatives!